Casing-elevator.



W i I A KR. I

1 1 v it! W! W. WILKINSON.

CASING ELEVATOR.

APPLICATION FILED MAR. 11, 1912 B w 3 w 9 15 Wz'fnasses; Jin n/or;

1/1761? fi a? (V1200)! Patented Dec. 17', 1912.

UNITED STATES PATENT oniuca WILGIE W. WILKINSON, 0F ORCUTT, CAIIIFORNIA, ASSIGNOB 0F ONE-HALF TO FRANK R. SEPULVEDA, OE ORCUTT, CALIFORNIA.

CASING-ELEVATOR.

Specification of Letters l'atent.

Patented Dec'. 17, 11912.

To all whom it may concern:

Be it knownthat I, NILOIE WV. \VILKIN-- SON, a citizen of theUnited States, residing at Orcutt, in the county of Santa Barbara and State of California, have invented new and useful Improvements in Casing-Elevators, of which the following is a specification! This invention relates to a casing elevator, such as is used around oil wells for raising and lowering casing sections, and particularly pertains to a clamp which is adapted to be attached to and detached from pipes, well-casings and similar structures, in handling them by means of block and tackleor hoists. 1

It is the object of this invention to provide a clamp for engaging the ends of cylindrical or tubularwell casings, pipes, conduits and the like, which clamp is designed to be attached to the cable or chain of a hoist or elevator for'raising and lowering the casing from a horizontal to a vertical position, or vice versa.

' Another object is to provide a swivel,-two'- part casing clamp Wh1Cl1.lS simple in construction, which may be-readily attached to, v

' .mount'e'd atits hinged connectlon with the and removed from, a casing section, irrespective of whether the section lies horizontally or stands vertically, and whichxis so constructed that its bail may be detached, leaving the clamp to act as a collar-to suspend the pipe from.

Other objects will appear in the following specification.

The invention consists of the parts and the construction and combination of parts,

as hereinafter more fully described and is a detail section on the line X'-X of Fig.

1. Fig. 6 is a modified form of the invention.

In the drawings, the invention is shown as including a clamp collar made in two sections or jaw members 2-3, which are hingedly connected together, by means of a bolt 4 which passes through alined perforations in-interlocking bosses formed on the members 23, as is common in hinge construction. The inner adjacent faces of.the jaw members 2-3 are arched and are shaped to conform to the periphery of a pipe-or 'casing, indicated at A, which is designed to be placed between the jaws and securely engaged thereby.

Means are provided for locking the jaw member 2 and the jaw member 3 in a closed position around. the casing A, which means is here shown as consisting of a spring pressed latch 5, pivoted at 6 on thejaw member and adapted to engage the outer edge of the [jaw member 2, as shown in F ig.2.

Auxiliary means are provided for locking the jaw members 23 together, and acting in conjunction with the latch- 5 which consists 'of'a bolt 7. which is desi ed to be inserted'in a perforation 8, formed in a boss '9 on'th'e upper edge of the jaw 3. The boss 9 extends through a slot 10 formed in the outer edge of the jaw member 2, and projects above the outer edge of the jaw memher-2, as shown in Fig. 3.

The jaw member '2 is designed to be loosely jaw .3 to allow-of a slight longitudinal move ment of the jaw 2 in relation to the jaw 3.

One end of the slot 10 is formed with a beveled edge 11 which is designed to extend into a beveled groove 12 formed on the boss 9, as shown in Fig. -5, as will presentlybe described. Formed on the sides of the jaw member 3 and projecting laterally there- 3 is place beneath the casing A, adjacent the flange B on the end thereof, as shown in Fig, 2, and the jaw membcrfl'is closed over the upper side of the casingand is moved longitudinally on the bolt 4': to throw the beveled edge 11 on the jaw member 2 into engagement with the beveled. groove 12 on the jaw 3 and is locked to the jaw 3 b means of the latch 5 and the bolt 7 as be ore described; the flange B on the casing A acting to hold the beveled edge 11 in the groove 12. Thebail 14 is then connected to a hook 15 or other suiigble device on a chainor cable 16', leading om a hoist or elevator of any suitable description, not here shown.

By moving the chain or cable 16 in an upward direction the casing A will be lifted from the horizontal position, shown in Fig. 2, into a vertical position, shownin Fig. 4; the bail 14 turnin on the trun'n'ions 13 during the change position of the casing and the interlocked jaws 2.3 thereon. The

Weight of the casing A, when supported on the jaws -23, when the latter are in a vertical osition, will hold the beveled edge 11 (if t 0 slot in engagement with the beveled groove 12 on the boss 9, in which position the jaw 2 will be securely held against opening.

If desired, the bail may be formed in separable parts, as shown at 14-14 in Fig. 6,

which permits the bail being readily detached from the trunnions 13; removable cotter pins 17 being employed for holding the bail l4-14 in position on the trunnions 13. This construction admits of the bail being removed from the clamp when it is desired to leave the clamp attached to the casing, which is done when the casing is to be supported in a vertical position independent of the bail and the hoist, and in which event the clamp forms a wide projecting colelevated casing is heldin its vertical position and being attached to the casing therebeneath.

Havin what I 0% Patent is 1. A casing elevator comprising a twopart clam collar, the'parts hingedly connected an having means for locking them together about a pipe, one of said parts hayingv a boss and the other having a slot into which the boss extends said boss formed with a beveled groove and'said slot having a beveled edge engageable with said groove on the longitudinal movement of the 'members in relation to each other, and a bail swiveled to the collar so as to be turnable at difierent angles with. respect to the pipe clamped. I

, 2. In a casing elevator, a clamp for engaging a casing, comprising a pair of hinged jaw members, means for locking the jaw thus described my invention, ann and desire to secureby Letters members together, including a spring pressed latch mounted on one of the aw members. 'and engageableiwith the other jaw member,

a boss on one of the jaw members, a slot on the other jaw member into which said boss extends, said boss". formed with a beveled groove,.and said slot formedwith a beveled edge engageable with the beveled groove on the longitudina-l movement of the aw members in relation to each other.

In testimony whereof I have hereunto set my hand in the presence of two. subscribing witnesses.

WILCIE W. WILKINSON.

Witnesses:

- A. MAILLAUX,

C. 'J. WILKINSON. 

